The Number Zero

One thing that struck me is that so many places thought of zero around the same time. I don't think anyone discovers anything single-handedly.As a baby we figure out how to crawl from watching others and practicing. When we decide to try to discover things, part of the idea comes from someone else. So I conclude that no one discovered zero. I think the concept of zero was thought of first. The whole world discovered zero through curiosity and watching others.